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I was test driving my 4 speed 86 F150 inline six just up the road and on my way home I heard what sounded like a rubber pop and release. I pulled into my driveway and parked. When I got out I saw all of my transmission fluid running down the driveway. I got under the truck and found this rubber gasket had ripped some how or probably more likely dry rotted. I cannot find what this gasket is called. Attached are pictures. Also, am I wrong to think that the gasket was just old and gave out or would something else have damaged it?
Ok the thing in your hand is a clutch fork boot, dont know why its covered in oil?
You might be able to find one on LMC, Dennis Carpenter and maybe Rock Auto site.
I could not find one for my 81 with a T18 transmission
The last picture is the fork & hyld. slave cly.
Now that could have given way.
With a helper make sure the clutch master is full and you under the truck have helper push down on the clutch pedal slowly and see if fluid comes out.
May be do this a few times and if leaking needs to be replaced.
Dave ----
Ok so fun story. I did some more investigating and saw oil in places that could have not come from the transmission. Come to find out that I had a failure at my oil filter at the gasket. I asked a friend of mine who is handy with cars and trucks and he asked me if my F150 has a small filter to allow for piston blow-by to escape. The filter is a Bosch filter that I just installed maybe a month ago. Anyone have any thoughts?
So this filter is in the air filter assy. and called a breather filter.
It lets clean filtered air into the motor that the PVC pulls out.
If filter is filled with oil check to make sure the PVC in the valve cover is working.
If it is working and still filled with oil the motor will need a rebuild as the piston rings are not sealing.
Dave ----
What your friend said doesn't make any sense at all. Your engine takes a certain oil filter, probably the common filter all the old Fords use. I think a Fram is a PH8A. Changing the oil filter size is not going to do anything but change your filtering capacity.
The most common reason your oil filter would start suddenly leaking is the gasket on the old filter stuck to the engine when you took it off. You did not notice it, and screwed the new filter on top of the old gasket stuck to the engine. So then you have two gaskets, one on top of the other, and they like to leak. I have done it myself once, and now I always look for the gasket when I take the filter off. I have had it happen after my first event several times and have caught it.
Ok so fun story. I did some more investigating and saw oil in places that could have not come from the transmission. Come to find out that I had a failure at my oil filter at the gasket. I asked a friend of mine who is handy with cars and trucks and he asked me if my F150 has a small filter to allow for piston blow-by to escape. The filter is a Bosch filter that I just installed maybe a month ago. Anyone have any thoughts?
Originally Posted by Franklin2
What your friend said doesn't make any sense at all. Your engine takes a certain oil filter, probably the common filter all the old Fords use. I think a Fram is a PH8A. Changing the oil filter size is not going to do anything but change your filtering capacity.
The most common reason your oil filter would start suddenly leaking is the gasket on the old filter stuck to the engine when you took it off. You did not notice it, and screwed the new filter on top of the old gasket stuck to the engine. So then you have two gaskets, one on top of the other, and they like to leak. I have done it myself once, and now I always look for the gasket when I take the filter off. I have had it happen after my first event several times and have caught it.
Dave I think they are talking of 2 different things?
The OP said "oil filter" but his buddy asked about the PVC breather.
So what one is the issue?
Dave ----
Well I think it was the gasket to the oil filter. I did find a second gasket on it when i took it off so maybe that's what caused the massive leak. I asked my friend if he ever had a failure at the oil filter and he asked me about crank case pressure causing a failure at the oil filter. So I was just wanting to make sure that too much pressure was not an issue with causing my filter to fail.
Well I think it was the gasket to the oil filter. I did find a second gasket on it when i took it off so maybe that's what caused the massive leak. I asked my friend if he ever had a failure at the oil filter and he asked me about crank case pressure causing a failure at the oil filter. So I was just wanting to make sure that too much pressure was not an issue with causing my filter to fail.
Like I said once it happens to you once, it never will again. You will always look for the old gasket in the old filter. Don't be surprised if someday you go to pre-oil the gasket on your new filter and it doesn't have one. You can't trust anyone or any manufacturer.
Well I think it was the gasket to the oil filter. I did find a second gasket on it when i took it off so maybe that's what caused the massive leak. I asked my friend if he ever had a failure at the oil filter and he asked me about crank case pressure causing a failure at the oil filter. So I was just wanting to make sure that too much pressure was not an issue with causing my filter to fail.
OK I hate to say this but dont listen to your friend as there is no way engine blow by can cause the OIL FILTER to leak.
There is only oil PSI on the filter no crank case PSI.
Good to hear you found the oil leak issue.
Dave ----
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